SN74ALVC164245
16 BIT 2.5 V TO 3.3 V/3.3 V TO 5 V LEVEL SHIFTING TRANSCEIVER
WITH 3 STATE OUTPUTS
SCAS416L − MARCH 1994 − REVISED FEBRUARY 2004
D
Member of the Texas Instruments
D
D
D
Widebus Family
Max t
pd
of 5.8 ns at 3.3 V
±24-mA
Output Drive at 3.3 V
Latch-Up Performance Exceeds 250 mA Per
JESD 17
DGG OR DL PACKAGE
(TOP VIEW)
description/ordering information
This 16-bit (dual-octal) noninverting bus
transceiver contains two separate supply rails.
B port has V
CCB
, which is set to operate at 3.3 V
and 5 V. A port has V
CCA
, which is set to operate
at 2.5 V and 3.3 V. This allows for translation from
a 2.5-V to a 3.3-V environment, and vice versa, or
from a 3.3-V to a 5-V environment, and vice versa.
The SN74ALVC164245 is designed for
asynchronous communication between data
buses.
To ensure the high-impedance state during power
up or power down, the output-enable (OE) input
should be tied to V
CC
through a pullup resistor; the
minimum value of the resistor is determined by the
current-sinking capability of the driver.
1DIR
1B1
1B2
GND
1B3
1B4
(3.3 V, 5 V) V
CCB
1B5
1B6
GND
1B7
1B8
2B1
2B2
GND
2B3
2B4
(3.3 V, 5 V) V
CCB
2B5
2B6
GND
2B7
2B8
2DIR
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
1OE
1A1
1A2
GND
1A3
1A4
V
CCA
(2.5 V, 3.3 V)
1A5
1A6
GND
1A7
1A8
2A1
2A2
GND
2A3
2A4
V
CCA
(2.5 V, 3.3 V)
2A5
2A6
GND
2A7
2A8
2OE
ORDERING INFORMATION
TA
SSOP − DL
−40°C to 85°C
TSSOP − DGG
VFBGA − GQL
VFBGA − ZQL (Pb-free)
Reel of 1000
PACKAGE†
Tube of 25
Reel of 1000
Reel of 2000
Reel of 250
ORDERABLE
PART NUMBER
SN74ALVC164245DL
SN74ALVC164245DLR
SN74ALVC164245DGGR
SN74ALVC164245DGGT
SN74ALVC164245KR
74ALVC164245ZQLR
VC4245
ALVC164245
ALVC164245
TOP-SIDE
MARKING
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
FUNCTION TABLE
(each 8-bit section)
INPUTS
OE
L
L
H
DIR
L
H
X
OPERATION
B data to A bus
A data to B bus
Isolation
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Widebus is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright
2004, Texas Instruments Incorporated
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
1
TI [ TEXAS INSTRUMENTS ]
